Timberlake, 44, opened up about his "debilitating" Lyme disease symptoms after coming under criticism for his tour performances.

This undated provided by the U.S. Centers for Disease Control and Prevention shows a blacklegged tick, also known as a deer tick, a carrier of Lyme disease. Justin Timberlake announced this week that he's been diagnosed with Lyme disease.

Justin Timberlake 's announcement that he was diagnosed with Lyme disease has put a spotlight on the condition that impacts nearly 500,000 people in the United States each year, according to the Centers for Disease Control and Prevention.